Topic: fitting a 76' 750f rear wheel onto a 78' 750f

[Jake750]

Hey guys, hope everyone is well and healthy.

Ive got a 78 cb750f. I'm swapping the comstar wheels for spoked wheels. The front was easy since it has a gsxr front end and cognitomoto sells a bolt on laced front wheel hub. The rear wheel is where i'm confused. One of the forum members graciously sold me a 76' rear wheel hub. Until just recently I thought it was a no brainer bolt on swap since they both are disc brake. Apparently its not a direct swap. Can anyone provide some info on how to fit a 76'cb750f rear wheel hub onto a 78' 750f?

I still have the 78' comstar wheels and all their parts.

Hope everyone is safe during this craziness.

[Bankerdanny]

The 77-78 F uses a different (wider) size chain (630 vs 530) and the front sprocket is a few MM farther out than the wire wheel bikes, so you may need to get an offset rear sprocket to properly align the chain using a wire wheel rear.

I know that the spacing on the rear caliper holders is identical between the wire wheel and Comstar bikes (my F1 has the rear caliper and arm from an F3).

[Jerry Rxman Griffin aka MuthaF'er]

You will need to use the 78 F rear sprocket carrier on the 76 hub. 10mm offset on 77/78's. The sprocket carrier accounts for this additional 10mm. Spacers etc are the same.